Maxim Integrated MAX6412UK23+T Microprocessor Reset Circuit

The MAX6412UK23+T from Maxim Integrated is a highly reliable, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability through its ability to reset a µP during power-up, power-down, and brownout conditions. With its small SOT23 packaging, it is perfectly suited for space-constrained applications where efficient power management is critical.

This device operates with a nominal threshold voltage of 2.3V, making it ideal for low-voltage operation. It ensures that the µP is held in the reset state until the system voltage has stabilized at the valid level for reliable system operation. The reset output is available in both active-low and active-high configurations, which makes the MAX6412UK23+T versatile and compatible with a wide range of microprocessors and other digital systems.

The MAX6412UK23+T features an open-drain RESET output, which remains asserted for a minimum timeout period of 140ms after V_CC has risen above the reset threshold level. This timeout ensures that the µP has adequate time to initialize and stabilize before commencing operation. The device's low supply current of 1.5µA (typical) is particularly beneficial for battery-powered applications, where power conservation is a priority.

With its built-in temperature sensor, the MAX6412UK23+T can operate over a wide temperature range of -40°C to +125°C, making it suitable for industrial applications where temperature extremes are common. The device's transient immunity and built-in debounce circuitry also contribute to its robust performance in environments with noisy power supplies.

For design flexibility, the MAX6412UK23+T is available in a variety of factory-trimmed reset threshold voltages. This allows designers to select the appropriate version that matches the specific voltage requirements of their system. The device's lead(Pb)-free and RoHS-compliant packaging ensures environmental sustainability and compliance with global regulations.

In summary, the MAX6412UK23+T from Maxim Integrated is a compact, efficient, and reliable solution for µP system power monitoring, offering designers a high level of protection against power supply anomalies in a wide range of applications.